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This incident is Case 9 in Isaac Koi's "Top 100" article, since it was referred to in 142 of the books covered by that article.
This incident featured in a list of cases produced by Greg Bishop as part of a survey by the Fortean Times in 2007 of various researchers of the ten cases from 1947 onwards that interested them the most.
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This incident is Case 52 in Isaac Koi's "Top 100" article, since it was referred to in 53 of the books covered by that article.
On 16 October 1973, the Russian newspaper Tass reported that Professor Samuel Kaplan (director of the Radio Institute at
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